WO2019080806A1 - 储能换热一体化装置 - Google Patents

储能换热一体化装置

Info

Publication number
WO2019080806A1
WO2019080806A1 PCT/CN2018/111262 CN2018111262W WO2019080806A1 WO 2019080806 A1 WO2019080806 A1 WO 2019080806A1 CN 2018111262 W CN2018111262 W CN 2018111262W WO 2019080806 A1 WO2019080806 A1 WO 2019080806A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchange
energy storage
heat
tank
exchange medium
Prior art date
Application number
PCT/CN2018/111262
Other languages
English (en)
French (fr)
Inventor
曾智勇
李珂
崔小敏
Original Assignee
深圳市爱能森科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市爱能森科技有限公司 filed Critical 深圳市爱能森科技有限公司
Publication of WO2019080806A1 publication Critical patent/WO2019080806A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the utility model belongs to the technical field of energy storage equipment, and more particularly to an energy storage heat exchange integrated device.
  • a molten salt (abbreviated as a molten salt) is a molten liquid of a salt.
  • a molten salt refers to a melt of an inorganic salt, for example, a melt of an alkali metal, an alkaline earth metal halide, a nitrate, or a sulfate.
  • Commonly used high temperature heat storage materials can be classified into sensible heat and latent heat.
  • the sensible heat-type high-temperature heat storage material has the advantages of stable performance and low price, but its heat storage density is low, and the heat storage device is bulky; the latent heat type high-temperature heat storage material has problems of high temperature corrosion and high price, but its heat storage The density is high, the heat storage device is compact, and the endothermic-exothermic process is approximately isothermal, which is easy to operate and control.
  • High-temperature molten salt is one kind of latent heat storage phase change material, and at the same time it can form ionic liquid, which has many characteristics that low temperature heat storage material does not have, which has caused great concern.
  • Molten salt energy storage systems can effectively increase the stability of renewable energy or industrial waste heat output.
  • the energy storage heat exchange system is two sets of energy storage tanks and brine heat exchangers.
  • the system is complex and the layout space is large.
  • the new heating energy station project is generally located in the old town or new industrial park, and the available construction area is very large. Limited.
  • the utility model aims to provide an integrated energy storage heat exchange device, which solves the technical problem that the existing energy storage heat exchange device has complicated structure, large layout space requirement and high cost.
  • An energy storage heat exchange integration device comprising a tank body for containing energy storage materials, the tank body is provided with a feeding port and a sewage outlet, and the top end of the tank body is provided with a protruding into the energy storage material so that a circulation pump for circulating a turbulent flow in the energy storage material, wherein a pump body of the circulation pump is located below a liquid level of the energy storage material; a heater and a heat exchanger are disposed in the tank body, and the heat exchanger is connected There is a heat exchange medium inlet and a heat exchange medium outlet for conveying an external heat exchange medium, the heat exchange medium inlet and the heat exchange medium outlet are located on the side wall of the tank; the tank body is further provided with a feeding port and Sewage outlet.
  • the circulation pump includes a pumping pipe and a pumping pipe.
  • an injection hole is disposed around the pumping pipe.
  • the can body is provided with a thermometer that protrudes into the can body and detects the temperature of the energy storage material.
  • a safety valve is disposed at a top end of the can body.
  • the feeding port is located at a top end of the can body
  • the sewage outlet is located at a side wall of the can body and near a bottom end of the can body.
  • the heat exchanger is located in a midway position within the can body.
  • the heat exchanger is a fixed tube plate heat exchanger.
  • the heater is an electric heater.
  • the heat exchange medium is water.
  • the energy storage heat exchange integrated device provided by the utility model heats energy storage through a heater during energy storage, and directly transfers heat through a heat exchanger of an external heat exchange medium through a heat exchanger in a heat exchanger, and is equipped with a circulation pump to increase storage.
  • the material can circulate in the material to improve the heat exchange efficiency.
  • the heat exchange device and the energy storage tank are optimized into one, and the whole energy storage heat exchange is integrated, which simplifies the heat exchange system, the heat exchange arrangement has a large operation space, and the heat exchange area is large; and the energy storage material for heating has been
  • the energy storage and discharge energy can be realized only in the tank body, and the energy storage heat exchange can be realized continuously, stably and safely by controlling the flow rate of the external heat exchange medium, and the energy storage heat exchange of the utility model is compared with the traditional energy storage + heat exchange two systems.
  • the integrated device has better heat exchange effect, lower cost and simpler control.
  • FIG. 1 is a schematic view of an integrated energy storage heat exchange device according to an embodiment of the present invention.
  • the energy storage heat exchange integration device comprises a tank body 1 for containing energy storage materials, the tank body 1 is provided with a feeding port 13 and a sewage outlet port 14, and the top end of the tank body 1 is provided with a material extending into the energy storage material to make the energy storage material
  • the circulation pump 2 of the internal circulation turbulence, the pump body of the circulation pump 2 is located below the liquid level of the energy storage material; the tank 1 is provided with a heater 3 and a heat exchanger 4, and the heat exchanger 4 is connected for conveying external heat exchange
  • the heat exchange medium inlet 11 and the heat exchange medium outlet 12 of the medium, the heat exchange medium inlet 11 and the heat exchange medium outlet 12 are located on the side wall of the tank body 1.
  • the energy storage heat exchange integrated device heats the energy storage through the heater 3 during the energy storage, and directly transfers heat through the heat exchanger 4 in the heat exchanger 4 through the heat exchange medium. Equipped with a circulation pump 2 to increase the circulating turbulence inside the energy storage material to improve heat exchange efficiency. In this way, the heat exchange device and the energy storage tank are optimized, and the whole energy storage heat exchange is integrated, which simplifies the heat exchange system.
  • the heat exchange arrangement has large operation space and large heat exchange area; and the special energy storage material for heating has only been
  • the energy storage energy in the tank body 1 and the energy storage heat exchange can be realized continuously, stably and safely by controlling the flow rate of the external heat exchange medium, compared with the traditional energy storage + heat exchange two systems, the energy storage exchange of the utility model
  • the heat integration device has better heat exchange effect, lower cost and simpler operation.
  • the circulation pump 2 includes a pumping pipe 21 and a pumping pipe 22.
  • the impeller in the pumping pipe 21 rotates, the energy storage material in the tank body 1 is pumped into the pump body of the circulation pump 2, and then pumped out from the pumping pipe 22, so that the circulating energy is continuously applied to the energy storage material in the tank body 1.
  • the circulating spoiler makes the temperature of the energy storage material uniform, thereby significantly improving the heat exchange efficiency.
  • an injection hole (not shown) is disposed around the pumping pipe 22.
  • the design can promote the internal agitation of the heat storage sensible heat system composed of energy storage materials, further increase the turbulence and improve the heat exchange efficiency.
  • the can body 1 is provided with a thermometer 5 extending into the can body 1 for detecting the temperature of the energy storage material.
  • the thermometer 5 extends into the can body 1 and is inserted into the energy storage material, so that the temperature of the energy storage material can be monitored in real time through the thermometer 5, so that the real-time temperature of the energy storage material can be effectively known by the worker in real time, thereby further controlling
  • the operating state of the heater 3 and the heat exchanger 4 enables control of the energy storage material within a temperature range that needs to be set.
  • the top of the can body 1 is provided with a safety valve 6.
  • the safety valve 6 enables the energy storage heat exchange integrated device to work safely and effectively.
  • the feeding port 13 is located at the top end of the tank body 1, and the sewage outlet 14 is located at the side wall of the tank body 1 and close to the bottom end of the tank body 1. position.
  • the feeding port 13 is used for adding the energy storage material into the tank body 1.
  • the top end of the tank body 1 is more favorable for feeding; at the same time, if there is a fault in the tank body 1, the worker can also enter from the feeding port 13 for maintenance.
  • the sewage outlet 14 is located at the side wall of the can body 1 and near the bottom end of the can body 1 to facilitate the discharge of contaminants in the can body 1.
  • the heat exchanger 4 is located at a middle position in the tank body 1. In this way, the space inside the tank 1 is rationally utilized, and the heat exchange effect on the energy storage material is better.
  • the heat exchanger 4 is a fixed tube plate heat exchanger.
  • the fixed tube plate heat exchanger has better heat transfer through the tube sheet.
  • the heater 3 is an electric heater.
  • the energy storage material may be a molten salt, and the molten salt is heated by the valley electric energy to achieve the purpose of energy storage during heat storage, and directly flows through the external heat exchange medium through the storage during heat exchange.
  • the heat exchange tube inside the tank is heat-exchanged and output for external use.
  • high and low temperature tanks can be installed, and electric heaters are installed.
  • the electric heater of the high temperature tank is mainly used for energy storage heating, and the main heater of the low temperature tank is electric heater.
  • the function is to prevent the phenomenon of solidification of the molten salt due to heat loss caused by heat conduction, convection, heat radiation, etc. during long-term operation.
  • the energy storage material can also be a low-temperature sensible heat storage system composed of a novel inorganic mixture, which has a lower freezing point (up to -37 ° C), and a low temperature sensible heat storage system has a suitable and stable use temperature (-20 -120 ° C), because the new heat storage material has a freezing point lower than water and has a wider temperature range than water, high heat storage efficiency and low heat storage cost; compared with phase change materials, material cost is greatly reduced, and temperature interval Broad, just covering the heating and cooling temperature requirements, not only can be used as heat storage materials, but also can be used as cold storage materials, a set of energy storage system can achieve the dual functions of winter heating and summer cooling (especially applicable to the northern environment), In case, the electric heater should ensure that the temperature inside the tank is maintained above -20 °C.
  • the side of the electric heater is installed in the space of the tank wall within 1 m from the bottom of the tank, and should be jacketed for inspection.
  • four 100KW electric heaters are set to ensure that the temperature inside the tank is balanced, which is higher than -20 °C to prevent solidification of the low-temperature sensible heat storage system.
  • the heat exchange medium is preferably water, which has a wide range of water sources and low cost.
  • the heat exchange medium may also be other fluid materials that are thermally conductive.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

一种储能换热一体化装置，包括用于盛装储能材料的罐体（1），罐体（1）设置有加料口（13）和排污口（14），罐体（1）顶端设置有伸入储能材料中以使储能材料内循环扰流的循环泵（2），循环泵（2）的泵***于储能材料的液面以下；罐体（1）内设置有加热器（3）和换热器（4），换热器（3）连接有用于输送外界换热介质的换热介质进口（11）和换热介质出口（12），换热介质进口（11）和换热介质出口（12）位于罐体（1）侧壁上。

Description

储能换热一体化装置 技术领域
本实用新型属于储能设备技术领域，更具体地说，是涉及一种储能换热一体化装置。
 背景技术
熔融盐（简称为熔盐），是盐的熔融态液体，通常说的熔盐是指无机盐的熔融体，例如碱金属、碱土金属的卤化物、硝酸盐、硫酸盐的熔融体。常用的高温蓄热材料可分为显热式和潜热式。显热式高温蓄热材料具有性能稳定、价格便宜等优点，但其蓄热密度低，蓄热装置体积庞大；潜热式高温蓄热材料虽然存在着高温腐蚀、价格较高等问题，但其蓄热密度高，蓄热装置结构紧凑，而且吸热-放热过程近似等温，易于运行控制和管理。高温熔盐作为潜热蓄热相变材料的一种，同时又能形成离子液体，具有许多低温蓄热材料所没有的特点，因而引起人们极大的关注。
熔盐储能***可以有效增加可再生能源或工业余热输出的稳定性。通常储能换热***是储能罐和盐水换热器两套装置，***复杂，布置空间要求大，而新型供暖能源站项目一般设置在老城镇或新型工业园区，其可利用的建设面积非常受限。
 技术问题
本实用新型的目的在于提供一种储能换热一体化装置，以解决现有储能换热装置结构复杂、布置空间要求大，致使成本高的技术问题。
 技术解决方案
为实现上述实用新型目的，本实用新型采用的技术方案如下：
一种储能换热一体化装置，包括用于盛装储能材料的罐体，所述罐体设置有加料口和排污口，所述罐体顶端设置有伸入所述储能材料中以使所述储能材料内循环扰流的循环泵，所述循环泵的泵***于所述储能材料的液面以下；所述罐体内设置有加热器和换热器，所述换热器连接有用于输送外界换热介质的换热介质进口和换热介质出口，所述换热介质进口和所述换热介质出口位于所述罐体侧壁上；所述罐体还设置有加料口和排污口。
进一步地，所述循环泵包括泵入管和泵出管。
进一步地，所述泵出管四周设置有喷射孔。
进一步地，所述罐体上设置有伸入所述罐体内且用于检测所述储能材料的温度的温度计。
进一步地，所述罐体顶端设置有安全阀。
进一步地，所述加料口位于所述罐体的顶端，所述排污口位于所述罐体的侧壁且靠近所述罐体底端的位置。
进一步地，所述换热器位于所述罐体内的正中间位置。
进一步地，所述换热器为固定管板式换热器。
进一步地，所述加热器为电加热器。
进一步地，所述换热介质为水。
 有益效果
本实用新型提供的储能换热一体化装置，储能时通过加热器加热储能，换热时直接通过外部换热介质流经罐体内的换热器换热，并配有循环泵增加储能材料内循环扰流，以提高换热效率。如此设计，换热装置与储能罐优化为一体，整个储能换热形成一体化，简化了换热***，换热布置可操作空间大，换热面积大；且供暖专用的储能材料一直仅在罐体内储能放能，并通过控制外部换热介质流量能连续、稳定、安全地实现储能换热，与传统储能+换热两套***比较，本实用新型的储能换热一体化装置换热效果更好，成本更低，操控更简单。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本实用新型实施例提供的储能换热一体化装置的示意图；
其中，图中各附图标记：
1-罐体；11-换热介质入口；12-换热介质出口；13-加料口；14-排污口；
2-循环泵；21-泵入管；22-泵出管；
3-加热器；4-换热器；5-温度计；6-安全阀。
 本发明的实施方式
为了使本实用新型要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图和实施例，对本实用新型进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本实用新型，并不用于限定本实用新型。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者间接在该另一个元件上。当一个元件被称为是“连接于”另一个元件，它可以是直接连接到另一个元件或间接连接至该另一个元件上。
需要理解的是，术语“长度”、“宽度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本实用新型和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。
请一并参阅图1，现对本实用新型实施例提供的储能换热一体化装置进行说明。该储能换热一体化装置包括用于盛装储能材料的罐体1，罐体1设置有加料口13和排污口14，罐体1顶端设置有伸入储能材料中以使储能材料内循环扰流的循环泵2，循环泵2的泵***于储能材料的液面以下；罐体1内设置有加热器3和换热器4，换热器4连接有用于输送外界换热介质的换热介质进口11和换热介质出口12，换热介质进口11和换热介质出口12位于罐体1侧壁上。
本实用新型实施例提供的储能换热一体化装置，储能时通过加热器3加热储能，换热时直接通过外部换热介质流经罐体1内的换热器4换热，并配有循环泵2增加储能材料内循环扰流，以提高换热效率。如此设计，换热装置与储能罐优化为一体，整个储能换热形成一体化，简化了换热***，换热布置可操作空间大，换热面积大；且供暖专用储能材料一直仅在罐体1内储能放能，并通过控制外部换热介质流量能连续、稳定、安全地实现储能换热，与传统储能+换热两套***比较，本实用新型的储能换热一体化装置的换热效果更好，成本更低，操控更简单。
进一步地，作为本实用新型提供的储能换热一体化装置的一种具体实施方式，循环泵2包括泵入管21和泵出管22。泵入管21中的叶轮转动，将罐体1内的储能材料泵入循环泵2的泵体内，然后从泵出管22泵出，如此循环工作，对罐体1内的储能材料不断地内循环扰流，使储能材料温度均匀，从而显著提高换热效率。
进一步地，作为本实用新型提供的储能换热一体化装置的一种具体实施方式，泵出管22四周设置有喷射孔（图未标注）。以此设计，可促进储能材料组成的储热显热***内部搅动，进一步增加扰流，提高换热效率。
进一步地，作为本实用新型提供的储能换热一体化装置的一种具体实施方式，罐体1上设置有伸入罐体1内且用于检测储能材料温度的温度计5。具体地，温度计5伸入罐体1内并***储能材料中，这样通过该温度计5可以实时监控储能材料温度，让工作人员可以实时有效地知晓储能材料的实时温度，进而可以进一步控制加热器3和换热器4的工作状态，实现控制储能材料在需要设定的温度范围内。
进一步地，作为本实用新型提供的储能换热一体化装置的一种具体实施方式，罐体1顶端设置有安全阀6。安全阀6可使储能换热一体化装置安全有效工作。
进一步地，作为本实用新型提供的储能换热一体化装置的一种具体实施方式，加料口13位于罐体1的顶端，排污口14位于罐体1的侧壁且靠近罐体1底端的位置。加料口13用于向罐体1内加入储能材料，设置于罐体1顶端更有利于加料；同时，罐体1内如有故障，工作人员也可从此加料口13进入便于维修。排污口14位于罐体1的侧壁且靠近罐体1底端的位置底端更有利于罐体1内的污染物排出。
进一步地，作为本实用新型提供的储能换热一体化装置的一种具体实施方式，换热器4位于罐体1内的正中间位置。如此设置，合理利用罐体1内的空间，而且对储能材料的换热效果更好。
进一步地，作为本实用新型提供的储能换热一体化装置的一种具体实施方式，换热器4为固定管板式换热器。固定管板式换热器通过管板换热，效果更好。
进一步地，作为本实用新型提供的储能换热一体化装置的一种具体实施方式，加热器3为电加热器。
在本实用新型提供的储能换热一体化装置中，储能材料可以为熔盐，储能时通过谷电加热熔盐达到储能目的，换热时，直接通过外部换热介质流经储罐内换热管换热后输出供外界使用，同时可以设置高、低温罐，都安装电加热器，高温罐的电加热器主要作用是用于储能加热，低温罐的电加热器的主要作用是防止由于长期运行时罐底、罐壁、罐顶等部位因热传导、对流、热辐射等引起热量损失而导致熔盐凝固的现象发生。
当然，储能材料还可以为新型的无机混合物构成的低温显热储热体系，具有更低的凝固点（可达-37℃），低温显热储热体系有合适且稳定的使用温度（-20-120℃），因新型储热材料凝固点低于水，并比水有更宽的使用温度范围，储热效率高，储热成本低廉；与相变材料相比，材料成本大大下降，且温度区间宽泛，恰好覆盖了供暖及制冷的温度需求，不仅可做储热材料，同时可做蓄冷材料，一套储能***即可实现冬季供暖及夏季供冷的双重功能（特别适用北方环境），该情况下，电加热器需保证罐体内的温度维持在-20℃以上，电加热器侧面安装在罐壁离罐底1m内的空间内，且应带夹套，以利于检修。在冷温罐中，设置4个100KW电加热器，保证整个罐内温度均衡，都高于-20℃，防止低温显热储热体系凝固。
本实施例中，换热介质优选为水，水来源广泛，成本低。当然，在其他实施例中，换热介质还可以是其他易导热的流体物质。
以上所述仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本实用新型的保护范围之内。

Claims (10)

  1. 一种储能换热一体化装置，包括用于盛装储能材料的罐体，所述罐体设置有加料口和排污口，其特征在于：所述罐体顶端设置有伸入所述储能材料中以使所述储能材料内循环扰流的循环泵，所述循环泵的泵***于所述储能材料的液面以下；所述罐体内设置有加热器和换热器，所述换热器连接有用于输送外界换热介质的换热介质进口和换热介质出口，所述换热介质进口和所述换热介质出口位于所述罐体侧壁上。
  2. 如权利要求1所述的储能换热一体化装置，其特征在于：所述循环泵包括泵入管和泵出管。
  3. 如权利要求2所述的储能换热一体化装置，其特征在于：所述泵出管四周设置有喷射孔。
  4. 如权利要求1所述的储能换热一体化装置，其特征在于：所述罐体上设置有伸入所述罐体内且用于检测所述储能材料的温度的温度计。
  5. 如权利要求1所述的储能换热一体化装置，其特征在于：所述罐体的顶端设置有安全阀。
  6. 如权利要求1所述的储能换热一体化装置，其特征在于：所述加料口位于所述罐体的顶端，所述排污口位于所述罐体的侧壁且靠近所述罐体底端的位置。
  7. 如权利要求1所述的储能换热一体化装置，其特征在于：所述换热器位于所述罐体内的正中间位置。
  8. 如权利要求1-7任一项所述的储能换热一体化装置，其特征在于：所述换热器为固定管板式换热器。
  9. 如权利要求1-7任一项所述的储能换热一体化装置，其特征在于：所述加热器为电加热器。
  10. 如权利要求1-7任一项所述的储能换热一体化装置，其特征在于：所述换热介质为水。
PCT/CN2018/111262 2017-10-25 2018-10-22 储能换热一体化装置 WO2019080806A1 (zh)

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